People telling me to remove the cone filter off my cossie as it draws hot air in from the turbo Im pretty sure we've had this debate before and the amount of cool air rushing through the engine bay is enough to keep the hot air away from the cone? Im going back 7 years though when i had my BigT escos.
Also im pretty sure all the big HP cars like Rods and Martins and Mikes etc etc all run cones?

It will be staying on as thr chatter is ace lol but wondered what you guys thought?

 

they run cones but in a made up box.

run a cone but make up a pannel to separate it from heat source.

 

So long as the cone is in the original place as the airbox and not on the turbo itself, there is less than 2C difference between ambient and air filter temp.
I USE NO HEAT SHEILD BETWEEN TURBO AND AIR FILTER.
IT ABSOLUTELY DOES NOT DRAW ANY AMOUNT OF HOT AIR.
I have sensors all over my car(sapphy) and even zeroed the sensors so they read precisely the same before using, I have a sensor mounted in the end rubber bit of the group a cone filter, you pick up a bit of heat around town speeds, up to 15C on a really hot day, but once above 30mph it settles back down within 500 metres to within 2C of ambient.
I also had sensors in the pipe between turbo intercooler, and intercooler plenum and plenum itself, now just run temp sensor in air filter end(so it goets no cooling air flow, just static air), and plenum, all in about Ł6-Ł8 cost for a switchable 2 temp digital readout, same ones on ebay for around Ł40, which are only 1 temp reading!!
tabetha

 

Cheers Lads!

 

On the RR, with a fecking huge fan, I seem to remember putting my hand next to a cone filter and the heat on full boost, flat out was too much to hold my hand next to the cone filter and that's with the bonnet open!

 

Airflow will be different on the road compared to a rolling road where a fan only covers part of the area, all I can say is what I see reading wise.
tabetha

 

Trust me, this fan covers the whole front of the car, you couldnt crawl up the cowling when its on full.

and with the bonnet open, i'd hazard a guess at the engine bay seeing way more air than it would on the road with the bonnet shut.

I can only comment on the heat that was burning my hand though

 

sorry but thats bull shit

 

Where's Rainbird when you want an arguement about this!

 

+ 1 , airflow on the road is TOTALLY different.

 

in stead of spending time arguing i would spend that time making a firewall,,better to have and not need etc etc

 

oh right, so you've tested that, with the fan i'm talking about have you?



NAW

 

I've not argued!

 

I can't comment on your specific fan, but can say even after 6 hours on the rollers which mine did regular testing this and that, that I could hold my hand within 5-6" of the turbo, without discomfort, that's with a regulated 18C, temp we normally use.
I've tested the temps on various points in the engine bay over a 6 month period, it was as simple as moving the temp sensor, with it's built in 9v battery, to get a reading.
I actually did this to prove a point to a mate, who is a airflow designer/engineer(cars, parts, motorsport), as he said it was a cool area behind headlight, I had to eat my words ha ha.
It may be they were using a smaller fan, that's normally reserved for n/a cars etc with no i/coolers.
There was a car on the rollers that had the filter at the rear of the car(pug205), but so was the turbo at the rear, didn't have heat issues!!

 

good work tabs ,where can you get the sensors mate?

 

you have now!


it was more of a statement.not aimed at anyone mate

 

Oh no i'm not! Are you saying I'm arguing Dovboy?

 

Fair enough, probably different ways we test cars. if it was an accel run then It probably wouldnt get as hot, whereas any cars i've done it with have been held for 5 seconds every 500rpm, and then 5 seconds flat out so exhaust/turbo is probably a fair bit hotter than your average dyno run.

I definately couldn't hold my hand near a glowing red exhaust housing 5-6" away for any length of time.

infact, I saw a car the other day with a turbo blanket, VERY good bit of kit for keeping temps down, especially on RS turbo's to keep water temps down.

 

keep the cone lee!!...i wouldnt have thought it would be much higher using a cone imo.

 

are you on about your rs turbo asthe cosworth is a totaly different set up? as i would imagine a cone filter is poor on a rs turbo but not a cossie?

 

No, I was replying to Lee's original question regarding cone filters on cosworths...doesnt matter what car its on, a standard airbox will beat a cone filter any day of the week in regards to inlet temps.

 

you have no idea as i said look at the postion off a cossi filter and rs turbo filter in relation to turbo nuff said i think thicky

 

ive got a bit of pipe ducting coming from the front bumper and it directs air straight to the cone filter. The filter also get air from the bonnet vent.

 

Standard airbox with K&N filter and cold air feed from just by the headlight through a big tube for delivery of cold air works well.

The arguments about cone filter vs airbox though don't matter that much. It's the air temperature at the intake that's important. By then the air from the engine bay has gone through the filter, turbo, intercooler, plenum and is much warmer.

Charlie

 

This is one of those "can of worms" type topics, like 2WD Vs. 4x4 and so on, people will never agree.
I've read many of these threads over the last couple of years and the general accepted consensus is that combination of the two is the most logical approach, a cone, surrounded by a shield from the back.
However, personally i don't really care enough about it to actually go and do this mod as i have more important things to attend to on the car before i get to this stage.
BUT you have to look at the circumstances in which you use the car, i.e. I would imagine that any disadvantage of having no sheilded cone would only happen when the car is stationary, and would be greatly amplified when on a RR, when the car is moving then it's a non issue, so if you can live with that then it's a no brainer, but if your anal about that sort of thing, then fair enough.